It's questionable.

It's unique (no other stamped image disks exist from that civilization or surrounding civilizations) -- the symbols don't make much sense and they don't (in spite of what the Wikipedia article claims) really resemble Egyptian hieroglyphs:
[archaeology.about.com]

I don't know that it's accepted by "most archaeologists."

Some of the footnotes and journal references at the bottom of Wikipedia show a lack of support, as does the lack of journal articles.
[en.wikipedia.org]

In any case, a civilization that couldn't predict its own collapses and disasters is unlikely to be able to predict events 3,000 years after its death on a continent they had no awareness of and no way of reaching.

-- Byrd
Moderator, Hall of Ma'at